Clamping device for paperhangers&#39; outfits



OUTFITS Filed March 18, 1940 i M. C. HARRISON CLAMPING DEVICE FOR PAPERHANGERS v BIDS: E j

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July 8, 1941.

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7 m 7% 7mm Patented July 8, 1941 CLAMPING DEVICE FOR PAPERHANGERS OUTFITS 1 Mortimer 0. Harrison, Chicago, Ill. Application March 18, 1940, Serial No. 324,648

1 Claim.

This invention relates to a clamping device for 1 paperhangers outfits, including table or bench boards, trusses, horses or props and a straight edge of wood or metal.

The object of the invention is to provide a and capable of being quickly applied or removed.

Further objects and advantages will appear and be brought out more fully in the following specification, reference being bad to the accompanying drawing, in which:

Fig. 1 is a plan view of a paperhangers outfit with the clamping devices applied and in use;

Fig. 2 is an enlarged transverse section taken on the line 2-2 of Fig. 1;

Fig. 3 is an end view looking toward the left hand end of Fig. 2, showing the hinge joint;

Fig. 4 is an end view looking toward the right hand end in Fig. 2, showing the clamping means;

Fig. 5 is a plan View of the structure shown in Fig. 2;

Fig. 6 is an elevation of a clamping device with one end in section;

Fig. 7 is a fragmentary view similar to Fig. 2,

of a modification, and

Fig. 8 is a section on the line 8-8 of Fig. '7.

Referring to the drawing and more particularly to Figs. 1 to 6 inclusive, ill designates an ordinary paperhangers outfit for which the present clamping device or clamp is devised to hold the outfit in compact form when not in use for transportation or storing purposes, and at the same time permit the outfit to be readily taken apart and assembled or set up for use. This outfit includes table or bench boards II, usually three in number having dowel pins I2 extending from one edge of each board and entering correspondingly located sockets I3 on the other edge of said boards so as to form one working surface. The bench or table is designed to be supported on collapsible or foldable supports in the form of horses, props, trestles or easels l4 shown collapsible in Fig. 1. The outfit also includes a straight edge !5 which may be of any suitable construction such as metal or wood reinforced with metal strips along the edges and bearing a scale [6, usually six feet long along one edge and having a cutting groove I'I adjacent the opposite edge to facilitate measuring and cutting of the paper.

The clamping device or clamp proper is designated at I8 and includes a lower bar IQ of suitable spring steel or other desired metal, this bar forming a jaw which may be straight as shown in Fig. 2, or bowed up slightly as in Fig. 6, although when the devioe is applied it will assume a straight or rectilinear form against the face of one of the boards H in the manner shown in Fig. 2 of the drawing. The bar I9 is provided with a pair of turned up ears 29 at one end formed by providing a recess or bifurcation in said end and turning up the forked portions thus formed in circular formation. The opposite end is provided with similarly formed down turned ears 2|.

The top or looking bar is designated at 22 and includes a depending vertical end portion 23 bent downwardly at right angles thereto and having its lower end cut away at each side to form a reduced central portion curled to form an ear 24 to fit between the ears 20 and turned outwardly for this purpose. Through the medium of a pivot or trunnion pin 25 extending through the ears 20 and 24, the bars are pivotally connected to swing to clamping or open position as indicated in solid and dotted lines in Fig. 6. Extending at right angles to the portion 23 is a part 26 which is designated to clamp the straight edge I5, and then the bar 22 is bent outwardly at right angles as indicated at 21 and substantially parallel to the portion 23 to form a shoulder. This portion is then extended parallel to the part 26 and at right angles to the portion 21 to form a raised intermediate portion, as indicated at 23 and then inwardly or downwardly substantially at right angles as indicated at 29 parallel to the portions 23 and 21 but deeper than the latter portion to form a pocket 30. The purpose of making the portion 29 deeper or longer than the portion 21 is that the straight edge I5 is interposed between the boards and the portion 26 whereas the portion 3! at the free, end of the top bar 22 which extends outwardly substantially at right angles to the portion 29, engages directly with the top board of the boards II. The free end portion of the clamping end 3! has a slot 32 communicating with the end thereof and formed by bifurcating or forking said end to take a T-bolt 33, which has a pivot or trunnion 34 extending at right angles thereto at one end to pivotally connect in the ears 2! to the free end of the bar IS. The threaded end 35 of the bolt 33 is designed to take a wing nut 36, and when the clamp is applied to the outfit, as shown in the drawing, the bolt 33 is swung up into the slot 32 and the nut turned down to tightly clamp the parts of the outfit and prevent possible displacement thereof.

In Figs. 7 and 8 of the drawing a slight modification is shown in which the parts are the same as previously described, except that the bar l9 instead of having the bolt pivoted or hinged thereto, has a bolt rigid therewith. For this purpose, the bar is formed with a square or polygonal hole 31 and the end 38 is turned under to engage the head 39 of a bolt 40 disposed through the hole 31 and having a squared portion or shank 4| fitting the hole 3'! to restrain the bolt from turning. The threaded end 42 of the bolt is engaged by a wing nut 43. The bolt 40 is designed to extend through an elongated or other opening or slot 44 in the end portion 3| of the bar 22 and when the nut is turned down, the parts will be firmly clamped. In this form the bar l9 may be straight or may be bowed as previously described to assume a rectilinear condition when pressed against the bottom of the boards and clamped, in which condition the resiliency of the bar [9 and the tension produced thereby will draw the nut against the upper face of the end portion 3| of the bar 22 and hold the clamp in position until tightened or released.

It will thus be seen that this device obviates the necessity of having holes in the boards and straight edge and permits the straight edge to be clamped firmly along one edge or side of the boards instead of being disposed in the center, while the supports in the form of trestles, horses or props are clamped alongside of the same.

This is especially advantageous in clamping a metal straight edge as it will hold the same firmly and no holes are necessary in the boards or straight edge. This is due to the fact that the clamping action is stronger where the bars of the clamp are pivoted together. Also, by having the bolt fastened to the frame of the clamp any chance of the bolts being lost is eliminated as it is unnecessary to remove the nuts from the bolts and the bolts from the clamp bars as with the old device.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. 1, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come Within the scope of the appended claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

A clamping device for paperhangers outfits including a fiat bar, another bar hinged to one end thereof and offset from the first bar at said end, said second bar having angularly bent portions forming clamping portions, shoulders and a pocket and having three risers all at different elevations and a slot at its free end, a bolt hinged to the free end of the other portion to extend substantially at right angles to the bars and engage the slot, and a nut 0n the bolt to clamp the bars against the outfit.

MORTIMER C. HARRISON. 

